Interference Aware Relay Assignment Schemes for Multiuser Cognitive Radio Systems

Author

Naeem, M. ; Pareek, U. ; Lee, D.C.

Author_Institution

Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

In this paper, we present two low-complexity interference aware multiple relay assignment schemes for cognitive radio systems. The main objective in assigning multiple relays is to maximize the sum capacity of the cognitive radio system under the constraint of acceptable interference to the primary users (PU). The computational complexity of finding an optimal assignment by exhaustive search grows exponentially with the number of relays and users. The proposed schemes have low computational complexity, and their effectiveness is verified through simulation results.

Keywords

cognitive radio; computational complexity; interference (signal); multiuser channels; optimisation; telecommunication network routing; computational complexity; interference aware relay assignment; multiple relay assignment; multiuser cognitive radio systems; optimal assignment; primary users; sum capacity; Cognitive radio; Complexity theory; Interference constraints; Receivers; Relays; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594267

Filename

5594267